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A kind of unsaturated polyester resin for sheet metal putty and preparation method thereof

A technology of polyester resin and unsaturated fatty acid, which is applied in the field of unsaturated polyester polyester and its preparation, can solve the problems of poor flexibility and adhesion of resin, and achieve high production efficiency, easy polishing, and high strength Effect

Active Publication Date: 2016-11-23
CHANGZHOU HUAKE POLYMERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor flexibility and poor adhesion of the existing sheet metal putty resin, to provide a kind of unsaturated polyester for sheet metal putty, and sheet metal putty, and its preparation method

Method used

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  • A kind of unsaturated polyester resin for sheet metal putty and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Prepare the unsaturated polyester resin for sheet metal putty according to the following raw material formula and preparation method. The formula is:

[0031] name

[0032] The preparation method steps are as follows:

[0033] (1) Put maleic anhydride and water into a 5L reaction kettle, open and stir, and ventilate nitrogen;

[0034] (2) Stir and heat up to 120°C, and add trimethylolpropane;

[0035] (3) Add DCPD dropwise into the reaction kettle, then raise the temperature to 120°C and keep it warm for 3 hours, and test the acid value to 200-300mgKOH / g;

[0036] (4) Put soy oil, diethylene glycol, phthalic anhydride, and maleic anhydride into the reaction kettle, pass nitrogen gas, polycondense and dehydrate at 160-170°C, use resin / styrene=2 / 1 to prepare samples to test the bubble tube viscosity, The end point of the reaction is P~Q;

[0037] (5) above-mentioned resin is cooled to 100 ℃, add 200ppm hydroquinone to make inhibitor;

[0038] (6) The re...

Embodiment 2

[0043] (1) Prepare the unsaturated polyester resin for sheet metal putty according to the following raw material formula and preparation method. The formula is:

[0044] name

[0045] Methylpropanediol

[0046] The preparation method steps are as follows:

[0047] (1) Put oxalic anhydride and water into a 5L reaction kettle, open and stir, and nitrogen;

[0048] (2) Stir and heat up to 120°C, add dipentaerythritol;

[0049] (3) Add DCPD dropwise into the reaction kettle, then raise the temperature to 120°C and keep it warm for 3 hours, and test the acid value to 200-300mgKOH / g;

[0050] (4) Put linoleic acid, diethylene glycol, ethylene glycol, and methyl propylene glycol into the reaction kettle, blow nitrogen, conduct polycondensation reaction and dehydration at 180-190°C, and use resin / styrene = 2 / 1 to prepare samples for testing Bubble tube viscosity, the reaction end point is P~Q;

[0051] (5) above-mentioned resin is cooled to 100 ℃, add 200ppm hy...

Embodiment 3

[0057] (1) Prepare the unsaturated polyester resin for sheet metal putty according to the following raw material formula and preparation method. The formula is:

[0058] name

[0059] Succinic anhydride

[0060] The preparation method steps are as follows:

[0061] (1) succinic anhydride, water is dropped in the reactor of 5L, open and stir, logical nitrogen;

[0062] (2) Stir and heat up to 120°C, add tripentaerythritol;

[0063] (3) Add DCPD dropwise into the reaction kettle, then raise the temperature to 120°C and keep it warm for 3 hours, and test the acid value to 200-300mgKOH / g;

[0064] (4) Put tall oil fatty acid, adipic acid, and tetrahydrophthalic anhydride into the reaction kettle, blow nitrogen, polycondense and dehydrate at 190-200°C, use resin / styrene = 2 / 1 to prepare samples to test the bubble tube viscosity , the reaction end point is P~Q;

[0065] (5) above-mentioned resin is cooled to 100 ℃, add 200ppm hydroquinone to make inhibitor; ...

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Abstract

The invention relates to an unsaturated polyester resin for metal plate putty, a preparation method thereof, the metal plate putty, and a preparation method of the metal plate putty. The preparation method of the unsaturated polyester resin comprises the following steps: carrying out an addition reaction on dicyclopentadiene, dicarboxylic anhydride, water and organic alcohol, carrying out a condensation polymerization reaction on a product obtained after the addition reaction, saturated and / or unsaturated fatty acid, diol and / or diacid to form a polymer, and dissolving the polymer in styrene to prepare the unsaturated polyester resin for metal plate putty. The metal plate putty with excellent performances is obtained by optimizing a resin synthesis technology, optimizing the formula of the putty and selecting an appropriate flexibilizer and mass percents, and has the characteristics of rapid solidification, easy polishing, high strength, good flexibility, high heat resistance and high production efficiency.

Description

technical field [0001] The invention relates to an unsaturated polyester polyester and a preparation method thereof, in particular to an unsaturated polyester polyester for sheet metal putty and a preparation method thereof. Background technique [0002] Sheet metal putty (also known as sheet metal filling soil) is a two-component unsaturated multi-component polyester putty used to repair the depressions and damages of steel plates in sheet metal work. It is mainly used to fill deep depressions and make the surface of the car body repair Flatten while allowing the primer to firmly adhere to the body. [0003] In recent years, with the development of social economy, especially the rapid development of the automobile industry, the demand for sheet metal putty is also expanding. Sheet metal putty has the characteristics of non-stick sandpaper for grinding, good flexibility, filling thickness up to 50mm, strong adhesion and short drying time, especially suitable for car repair ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/676C08G63/52C08F283/01C09D5/34
Inventor 周国友杨伟陈方
Owner CHANGZHOU HUAKE POLYMERS